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The International Normalized Ratio (INR) calculator is a simple, free tool to assess the unified prothrombin time (PT), and its meaning. It's an easy way to evaluate both the extrinsic pathway and the common pathway of coagulation.
A handy range of forms and templates to help you manage your warfarin therapy, record INR, warfarin dosage, appointments and much more
Prothrombin time (PT) measures the functional activity of the coagulation factors involved in the extrinsic and common pathways. These parameters are measured by the amount of time it takes for a fibrin clot to form after calcium and different activating factors are added to a blood sample.
The INR calculator is a tool that takes your PT and converts it into an INR value using the following formula: INR = (Patient’s PT / Mean Normal PT) ^ ISI. Where: Patient’s PT is the prothrombin time measured in seconds. Mean Normal PT is the average prothrombin time of a healthy population.
23 Αυγ 2024 · Choose your therapeutic INR range and refer to the INR warfarin chart to check recommendations for your patient's actual INR level. Get to know your patient's daily warfarin dose. Calculate your patient's weekly warfarin dose.
Clotting times >30% prolonged compared to controls are considered abnormal. Individual clotting factors need to be <30% before APTT or PT are prolonged. Point of care coagulation instruments (e.g., SCA2000) can determine the APTT and PT on small amounts of fresh citrated whole blood. These have been shown to be reliable in dogs.
06-12895-03. Intended Use. The PT is a unitized coagulation test intended for in vitro use in performing a quantitative, one-stage prothrombin time. The PT test is performed using fresh canine, feline, or equine whole blood. This test is to be used with the Coag Dx* Analyzer and is also compatible with the SCA2000* Coagulation Analyzer.
